Thermohydrometer



Oct. 22, 1935. L. EDELMANN 2,018,441

THERMOHYDROMEVTER Filed July 30, 1932 2 Sheets-Sheet l l.. EDELM AN N THERMOHYDROMETER Oct. ,22, 1935.

Filed July 30, 1952 2 sheets-sheet 2 `Lo E la l Patented Oct. 22, 1935 Pluaivr OFFICE 2.018.441 TnERMoHYDRoMETEa' Leo Edelmann, Chicago, Ill., assignor to E. Edelmann & Co., Chicago, Ill., a. corporation ci' Illinois Application July 30, 1932, Serial No. 626,998

4 Claims. (Cl. 26S-4.6)

This invention relates to improvements in thermo-hydrometers, and particularly to instruments of this character intended and adapted to be used in testing anti-freeze solutions in radiators and in other like connections.

An object of .my invention is to provide an instrument of this character that can be used in testing solutions lighter than water and solutions heavier than water, without the necessity oi using diierent scale markings, likely to cause confusion, upon the iioat element.

Another object is to so construct the parts that correction tables can be provided for a. plurality of different solutions of different characteristics, which correction tables take into account variations due to temperature, and the user can readily determine which table is to be usedand can make readings accordingly without possibility of confusion or error.

Still another object is to provide separate oats and separate correction scales for solutions lighter than water and for solutions heavier than water, together with means to insure use of. the proper oat and to direct attention to the proper correction table.

Still another object is to provide an instrument of this character which is relatively simple in its construction and assembly and which` includes a minimum number of parts adapted toA perform the functions and purposes intended..

With the above and other objects in view which will be apparent to those skilled in the art, my invention includes certain novel features of construction and combinationsof parts which will be hereinafter set forth in connection with the drawings and then pointed out in the claims.

In the drawings: y

Figure 1 is a view in side elevation illustrating ing an adaptation of my invention.

Fig. -2 is a similar view taken from the -opposite side of the instrument.

Fig. 3 is avertical sectional view through the instrument.

Fig. 4 is a. transverse sectional view substantially on line 4 4 of Fig. 1.

Fig. 5 is a fragmentary vertical sectional view taken at right angles to the showing in Fig. 3.

'Ihe nozzle tip I has a widened head 2 thereon which is provided with socket openings 3 and 4 to receive and hold the ends of. float 4or liquid barrels 5 and 6, which are of glass or other suitable material and can be of standard form and construction. A third socket opening 1 is provided in the head portion .2' to receive the lower end ot a thermometer housing 8, and this socket opening 1 has a passage 9 directly communicating with the passage I through the nozzle tip.

The head portion 2 is preferably' made of rubber or other suitable and like material, and is provided with a valve recess II having passages I2 yand I3 leading therefrom to communicate at their outer ends with the interior of the liquid and float barrels 5 and 6. A rotary plug valve I4 is inserted into the recess II with its stem I5 extending at one side and provided with a handle I6 in the form of a pointer, and this rotary y plug valve I4 is constructed .as a two-way valve to communicate selectively with the ports or .passages I2 and I3. A port I'I leads from passage 9 to the valve chamber II. 15

The valve structure is so constructed that as the pointer handle I6 is shifted to a position to point to oat barrel 5, which may be considered as the fioat barrel for taking readings of solutions lighter than water, communication is es- 50 tablished through port I2 and passage I'l from the nozzle tip Iii directly to this iioat barrel 5, and the port or passage I3 to float barrel ii is closed, the reverse being true in the opposite setting of the indicating handle I6. Stops Iii and g5 I9 are provided on the head portion 2 to limit movement ofthe pointer handle I 6 and thus insure proper settings in each of the adjusted positions.

The thermometer housing 8 extends up substantially parallel with the parallel iioat housings 5 and 6, and the upper portion 20 is preferably made of glass, or other suitable transparent material. A thermometer is mounted in this in the socket opening I to thus be influenced by liquid in passage 9, and the capillary tube 2I of the thermometer is carried in the transparent portion and has a scaler carrying member 22 mounted adjacent thereto so that readings can be taken as the height of the indicating column varies in the capillary tube, due to variations in the temperature of theliquid in passage 9.

.Aspreader member 23 is provided to hold said oat barrels 5 and t and the thermometer hous- 45 ing 20 in proper relation at their upper ends.

A cap 24 is provided on its lower side with socket openings 25 and 26 to receive and hold the upper ends of liquid and iioat barrels 5 and 6 in liquid vand air-tight connections, and a socket 50 opening21 is provided on the upper side to receive a connector sleeve 28, suction and compression bulb 29 being attached on the outer end of this connector sleeve 28. Ports 30 and 3| are provided to establish communication from the u suction bulb 29 to each of the float and liquid barrelsand. v

Floats I2 and are placed in the iloat and liquid barrels l and t, and these floats have the fstems thereof marked oil with suitable scale indications. For convenience, sleeves 94 and 99 are mountedrevolubly on the oat barrels il and 9 to normally drop by gravity to the position as indicated where they will not interfere in any way with the clear view of the stems of the iloats, and these sleeves 94 and 95 can have the outer surfaces thereof printed or otherwise marked to show correction tables for diiferent liquids. For convenience in use and identification, it may be found desirable to designate and mark the iioat 92 as the red iloat and the float 93 as the green float, and when this is done correction tables or other associated markings on the sleeves u and 95 can be correspondingly colored -or indicatedV so that the user will be certain that the proper iioat andthe proper correction vtable or other matter are being used.

In the use of this/instrument the indicating valve handle I 9V can be set to open the passage to either of the barrels l or 9, and close the passage to the other barrel. thus rendering operative only one side of the instrument, but in either setting the liquid is drawn into passage 9 so that the thermometer bulb is submerged and thus the temperature indicating portions are influenced in either use of the instrument.

As stated, this instrument is particularly adapted for use in testing solutions heavier thanvwater i and solutions lighter than water, and in the case of anti-freeze solutions, the barrel 5 and assoelated parts will be used for solutions lighter than water, as for instance, glycerine, ethylene-glycol,

and the several other solutions put out by manufacturers under distinctive and individual trade',

. marks or trade names.

In making a test as for example of a radiator solution,'the operator will ilrst ilnd out what kind Vthe instrument, the position or color of the correction table will tell whether to read the red iloat or the green oat and will indicate the proper setting of the handle i9. Having determined the solution to be tested and the color of the float to be used in making the reading, the handle il is pointed to that particular float in the instrument, the operator then squeezesvv the bulb 29 to draw some of the solution into the barrel and it has been found desirable to draw in and expel liquid several times before making a reming in order to equalize the temperature of the instrument with the solution tobe tested. I'he operatorl then manipulates the bulb 29 to draw' just enough solution to raise the float from the bottom of the jar or barrel and the instrument is then ready for the reading. Following this manipulation it is assured that the liquid in the barrel is of substantially the same temperature as the liquid influencing the thermometer or other temperature responsive element and consequently the two readings can be taken as substantially accurate tests of liquid under the same conditions.

To read the instrument, the user notes the letter on the stem of the hydrometer oat Just 5 above the top of the liquid. and then glances at the thermometer to note the ngure on the thermometer scale nearest the top of the indicating column. With the fio'at letter and the thermometer temperature reading in mind the operator w can then readily refer to the correction table for the particular liquid solution and by reading vertically and horizontally thereon can takethe ngure and the meeting point of the two readings as being a final figure or resultdesired. As in the 15 case of radiator solutions, it isdesirableto ascertain the actual freezing temperature of the solutions being tested, and with corrections for deil- -nite readings on the float scale arranged verticallyand corrections for definite readings of the thera0 ymometer scale arranged horizontally, the figure Y where the vertical and horizontal lines cross or Y meet isthe actual freezing temperature of the solutionA being tested.

As illustrated in Fig. 1 other correction. tables as or datamlght be enclosed in the upper end of the thermometer housing 2li, as indicated at 96. and a loop S'I-can be provided to suspend the instrument when not in use.l f

While I have herein shown and' described-only 90 certain specific embodiments of my invention and have set forth only certain possible modifications, it` will be appreciated that other changes in the form. construction, arrangement and assembly of the parts and in the materials used in the Il construction, can be made without departing from the spirit and scope of my invention.

I claim:

l. A thermo-hydrometer forV use in testing liquids of relatively different specic gravity com- 40 prising, a plurality of liquid barrels to provide one 'barrel for each of the liquids .to be tested, a single liquid suction nozzle connected with each of the barrels, a single suctionv and expulsion means connected with each of said liquid barrels,

a gauge float in each barrel calibrated lfor the particular liquid to be tested therein, and a single lvalve means associated with the nozzle to selectively open communication to 'any one of the liquid barrels. v

2. A syringe thermo-hydrometer for use in testing a pluralityoi' liquids of relatively differentv specific gravity comprising. a nozzle member provided with a main liquid passage and branched liquid passages, liquid and oat barrels connected 55 with said nozzle member in communication with each of the branched passages, a cap connected with the remaining ends of the several liquid barrels, a single suction and expulsion means connected with said capv and having communi- 0 cation with each of the several liquid barrels. a' gauge float in each of the liquid barrels. temy perature indicating means having a portion thereof within the main passage of the nozzle member to be iniluenced by and indicate the temu perature of liquid taken into said nozzle for test in any one of the liquid barrels, and valve means to control the flow of liquid from said main liquid passage through the branched passages and consequently to the liquid barrels. 'W

3. A syringe thermo-hydrometer for use in testing a plurality of liquids having relatively different specific gravities comprising, a nozzle member having a main liquid passage thereinto and provided with a widened head having '75` branched liquid passages therein communicating with the main liquid passage, a plurality of liquid and iioat barrels connected with the nozzle head and each in communication with one of the branched liquid passages, a cap tted to close the opposite ends of each of the liquid and oat barrels and provided with a passage communicating to each of the barrels, a single suction and compression means connected with the passage` connection to thus be in communication with each ot the liquid barrels, a gauge float in each of the liquid barrels, a valve mounted in the nozzle head to control the iiow of liquid from the main passage through the branched passages, and operating means associated with said valve meansl to visibly indicate the particular barrel having its branched passage connected with the main liquid passage.

4. A syringe thermo-hydrometer for use in testing a plurality of liquids having relatively different specic gravities comprising, a nozzle member having a main liquid passage thereinto and provided with' a widened head having branched liquid passages therein communicating with the main liquid passage, a plurality of liquid and float barrels connected with the nozzle head and each in communication with one of the branched liquid passages, a cap fitted to close the opposite ends of each of the liquid and float barrels and provided with a passage communicating passage connected with the main liquid passage,

and a single temperature indicating means-having a temperature influenced portion thereoi.l located in the main passage of the nozzle portion to be 90 inuenced by liquid taken into said passage i'or flow to any one of the liquid barrels.

LEO EDELMANN. 

